I've been on T3 only (20mcg) since mid-October, which I take once a day in the morning. I had a blood test last week in the morning before I took my dose and results were as follows:
TSH - 1.6 (0.27 - 4.2)
FT4 - 0.6 (12-22)
FT3 - 2.6 (3.1-6.8)
These are quite different to the results I had three weeks after starting T3:
TSH - 0.02
FT4 - 4.4
FT3 - 3.5
Even when I was on 75mcg levo, my TSH hadn't been above 0.09 in over a year, accompanied my mid-range FT4 and low FT3.
I don't really know what to make of the new results, some of my symptoms are better (notably my sluggish digestion and brain fogginess), but other things have not improved or have got worse e.g. anxiety/heart feeling 'heavy' and issues with exercise tolerance. My body temperature never reaches 37 and has dropped as low as 35.4 on occasion (not that I monitored it on T4). I have sometimes taken an extra piece of tablet (quarter to half) if I've felt like I needed it, especially for the anxiety, but didn't for 3 days before the blood test.
Could the first test have been too soon after starting T3 to see how it was working?
I had a stomach bug a week before the second test, could this have affected the result?
Also, as the test was just over 24 hours since the last dose, would that put ft3 mid-range rather than under?
Based on the results from 3 weeks after starting, my endo wanted to switch me to 25mcg levo and 10mcg T3, but my GP allowed me to stay on 20mcg T3 to give it a couple of months. I've got an apt with my GP tomorrow, and supposed to be seeing the endo next week - I say supposed because I'm tempted to seek a second opinion. I don't quite know how to approach tomorrow's appointment.
If anyone can help me make sense of this at all it would be very much appreciated.